72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
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/*
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* Generic PWM backlight driver data - see drivers/video/backlight/pwm_bl.c
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*
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* Copyright (c) 2013-2017, NVIDIA CORPORATION, All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __LINUX_PWM_BACKLIGHT_H
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#define __LINUX_PWM_BACKLIGHT_H
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#include <linux/backlight.h>
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struct pwm_bl_data {
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struct pwm_device *pwm;
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struct device *dev;
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unsigned int period;
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unsigned int lth_brightness;
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unsigned int *levels;
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bool enabled;
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struct regulator *power_supply;
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struct gpio_desc *enable_gpio;
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unsigned int scale;
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bool legacy;
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unsigned int pwm_gpio;
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u8 *bl_measured;
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int (*notify)(struct device *,
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int brightness);
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void (*notify_after)(struct device *,
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int brightness);
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int (*check_fb)(struct device *, struct fb_info *);
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void (*exit)(struct device *);
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};
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struct pwm_bl_data_dt_ops {
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int (*init)(struct device *dev);
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int (*notify)(struct device *, int brightness);
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void (*notify_after)(struct device *, int brightness);
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int (*check_fb)(struct device *, struct fb_info *);
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void (*exit)(struct device *);
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const char *blnode_compatible;
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};
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struct platform_pwm_backlight_data {
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int pwm_id;
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const char *name;
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unsigned int max_brightness;
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unsigned int dft_brightness;
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unsigned int lth_brightness;
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unsigned int pwm_period_ns;
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unsigned int *levels;
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/* TODO remove once all users are switched to gpiod_* API */
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int enable_gpio;
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unsigned int pwm_gpio;
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u8 *bl_measured;
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int (*init)(struct device *dev);
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int (*notify)(struct device *dev, int brightness);
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void (*notify_after)(struct device *dev, int brightness);
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void (*exit)(struct device *dev);
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int (*check_fb)(struct device *dev, struct fb_info *info);
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};
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#endif
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